|
@@
-1,566
+1,566
|
|
1
|
# Copyright (c) 2005 Rick Olson
|
|
1
|
# Copyright (c) 2005 Rick Olson
|
|
2
|
#
|
|
2
|
#
|
|
3
|
# Permission is hereby granted, free of charge, to any person obtaining
|
|
3
|
# Permission is hereby granted, free of charge, to any person obtaining
|
|
4
|
# a copy of this software and associated documentation files (the
|
|
4
|
# a copy of this software and associated documentation files (the
|
|
5
|
# "Software"), to deal in the Software without restriction, including
|
|
5
|
# "Software"), to deal in the Software without restriction, including
|
|
6
|
# without limitation the rights to use, copy, modify, merge, publish,
|
|
6
|
# without limitation the rights to use, copy, modify, merge, publish,
|
|
7
|
# distribute, sublicense, and/or sell copies of the Software, and to
|
|
7
|
# distribute, sublicense, and/or sell copies of the Software, and to
|
|
8
|
# permit persons to whom the Software is furnished to do so, subject to
|
|
8
|
# permit persons to whom the Software is furnished to do so, subject to
|
|
9
|
# the following conditions:
|
|
9
|
# the following conditions:
|
|
10
|
#
|
|
10
|
#
|
|
11
|
# The above copyright notice and this permission notice shall be
|
|
11
|
# The above copyright notice and this permission notice shall be
|
|
12
|
# included in all copies or substantial portions of the Software.
|
|
12
|
# included in all copies or substantial portions of the Software.
|
|
13
|
#
|
|
13
|
#
|
|
14
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
14
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
15
|
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
15
|
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
16
|
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
16
|
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
17
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
17
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
18
|
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
18
|
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
19
|
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
19
|
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
20
|
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
20
|
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
21
|
|
|
21
|
|
|
22
|
module ActiveRecord #:nodoc:
|
|
22
|
module ActiveRecord #:nodoc:
|
|
23
|
module Acts #:nodoc:
|
|
23
|
module Acts #:nodoc:
|
|
24
|
# Specify this act if you want to save a copy of the row in a versioned table. This assumes there is a
|
|
24
|
# Specify this act if you want to save a copy of the row in a versioned table. This assumes there is a
|
|
25
|
# versioned table ready and that your model has a version field. This works with optimistic locking if the lock_version
|
|
25
|
# versioned table ready and that your model has a version field. This works with optimistic locking if the lock_version
|
|
26
|
# column is present as well.
|
|
26
|
# column is present as well.
|
|
27
|
#
|
|
27
|
#
|
|
28
|
# The class for the versioned model is derived the first time it is seen. Therefore, if you change your database schema you have to restart
|
|
28
|
# The class for the versioned model is derived the first time it is seen. Therefore, if you change your database schema you have to restart
|
|
29
|
# your container for the changes to be reflected. In development mode this usually means restarting WEBrick.
|
|
29
|
# your container for the changes to be reflected. In development mode this usually means restarting WEBrick.
|
|
30
|
#
|
|
30
|
#
|
|
31
|
# class Page < ActiveRecord::Base
|
|
31
|
# class Page < ActiveRecord::Base
|
|
32
|
# # assumes pages_versions table
|
|
32
|
# # assumes pages_versions table
|
|
33
|
# acts_as_versioned
|
|
33
|
# acts_as_versioned
|
|
34
|
# end
|
|
34
|
# end
|
|
35
|
#
|
|
35
|
#
|
|
36
|
# Example:
|
|
36
|
# Example:
|
|
37
|
#
|
|
37
|
#
|
|
38
|
# page = Page.create(:title => 'hello world!')
|
|
38
|
# page = Page.create(:title => 'hello world!')
|
|
39
|
# page.version # => 1
|
|
39
|
# page.version # => 1
|
|
40
|
#
|
|
40
|
#
|
|
41
|
# page.title = 'hello world'
|
|
41
|
# page.title = 'hello world'
|
|
42
|
# page.save
|
|
42
|
# page.save
|
|
43
|
# page.version # => 2
|
|
43
|
# page.version # => 2
|
|
44
|
# page.versions.size # => 2
|
|
44
|
# page.versions.size # => 2
|
|
45
|
#
|
|
45
|
#
|
|
46
|
# page.revert_to(1) # using version number
|
|
46
|
# page.revert_to(1) # using version number
|
|
47
|
# page.title # => 'hello world!'
|
|
47
|
# page.title # => 'hello world!'
|
|
48
|
#
|
|
48
|
#
|
|
49
|
# page.revert_to(page.versions.last) # using versioned instance
|
|
49
|
# page.revert_to(page.versions.last) # using versioned instance
|
|
50
|
# page.title # => 'hello world'
|
|
50
|
# page.title # => 'hello world'
|
|
51
|
#
|
|
51
|
#
|
|
52
|
# page.versions.earliest # efficient query to find the first version
|
|
52
|
# page.versions.earliest # efficient query to find the first version
|
|
53
|
# page.versions.latest # efficient query to find the most recently created version
|
|
53
|
# page.versions.latest # efficient query to find the most recently created version
|
|
54
|
#
|
|
54
|
#
|
|
55
|
#
|
|
55
|
#
|
|
56
|
# Simple Queries to page between versions
|
|
56
|
# Simple Queries to page between versions
|
|
57
|
#
|
|
57
|
#
|
|
58
|
# page.versions.before(version)
|
|
58
|
# page.versions.before(version)
|
|
59
|
# page.versions.after(version)
|
|
59
|
# page.versions.after(version)
|
|
60
|
#
|
|
60
|
#
|
|
61
|
# Access the previous/next versions from the versioned model itself
|
|
61
|
# Access the previous/next versions from the versioned model itself
|
|
62
|
#
|
|
62
|
#
|
|
63
|
# version = page.versions.latest
|
|
63
|
# version = page.versions.latest
|
|
64
|
# version.previous # go back one version
|
|
64
|
# version.previous # go back one version
|
|
65
|
# version.next # go forward one version
|
|
65
|
# version.next # go forward one version
|
|
66
|
#
|
|
66
|
#
|
|
67
|
# See ActiveRecord::Acts::Versioned::ClassMethods#acts_as_versioned for configuration options
|
|
67
|
# See ActiveRecord::Acts::Versioned::ClassMethods#acts_as_versioned for configuration options
|
|
68
|
module Versioned
|
|
68
|
module Versioned
|
|
69
|
CALLBACKS = [:set_new_version, :save_version_on_create, :save_version?, :clear_altered_attributes]
|
|
69
|
CALLBACKS = [:set_new_version, :save_version_on_create, :save_version?, :clear_altered_attributes]
|
|
70
|
def self.included(base) # :nodoc:
|
|
70
|
def self.included(base) # :nodoc:
|
|
71
|
base.extend ClassMethods
|
|
71
|
base.extend ClassMethods
|
|
72
|
end
|
|
72
|
end
|
|
73
|
|
|
73
|
|
|
74
|
module ClassMethods
|
|
74
|
module ClassMethods
|
|
75
|
# == Configuration options
|
|
75
|
# == Configuration options
|
|
76
|
#
|
|
76
|
#
|
|
77
|
# * <tt>class_name</tt> - versioned model class name (default: PageVersion in the above example)
|
|
77
|
# * <tt>class_name</tt> - versioned model class name (default: PageVersion in the above example)
|
|
78
|
# * <tt>table_name</tt> - versioned model table name (default: page_versions in the above example)
|
|
78
|
# * <tt>table_name</tt> - versioned model table name (default: page_versions in the above example)
|
|
79
|
# * <tt>foreign_key</tt> - foreign key used to relate the versioned model to the original model (default: page_id in the above example)
|
|
79
|
# * <tt>foreign_key</tt> - foreign key used to relate the versioned model to the original model (default: page_id in the above example)
|
|
80
|
# * <tt>inheritance_column</tt> - name of the column to save the model's inheritance_column value for STI. (default: versioned_type)
|
|
80
|
# * <tt>inheritance_column</tt> - name of the column to save the model's inheritance_column value for STI. (default: versioned_type)
|
|
81
|
# * <tt>version_column</tt> - name of the column in the model that keeps the version number (default: version)
|
|
81
|
# * <tt>version_column</tt> - name of the column in the model that keeps the version number (default: version)
|
|
82
|
# * <tt>sequence_name</tt> - name of the custom sequence to be used by the versioned model.
|
|
82
|
# * <tt>sequence_name</tt> - name of the custom sequence to be used by the versioned model.
|
|
83
|
# * <tt>limit</tt> - number of revisions to keep, defaults to unlimited
|
|
83
|
# * <tt>limit</tt> - number of revisions to keep, defaults to unlimited
|
|
84
|
# * <tt>if</tt> - symbol of method to check before saving a new version. If this method returns false, a new version is not saved.
|
|
84
|
# * <tt>if</tt> - symbol of method to check before saving a new version. If this method returns false, a new version is not saved.
|
|
85
|
# For finer control, pass either a Proc or modify Model#version_condition_met?
|
|
85
|
# For finer control, pass either a Proc or modify Model#version_condition_met?
|
|
86
|
#
|
|
86
|
#
|
|
87
|
# acts_as_versioned :if => Proc.new { |auction| !auction.expired? }
|
|
87
|
# acts_as_versioned :if => Proc.new { |auction| !auction.expired? }
|
|
88
|
#
|
|
88
|
#
|
|
89
|
# or...
|
|
89
|
# or...
|
|
90
|
#
|
|
90
|
#
|
|
91
|
# class Auction
|
|
91
|
# class Auction
|
|
92
|
# def version_condition_met? # totally bypasses the <tt>:if</tt> option
|
|
92
|
# def version_condition_met? # totally bypasses the <tt>:if</tt> option
|
|
93
|
# !expired?
|
|
93
|
# !expired?
|
|
94
|
# end
|
|
94
|
# end
|
|
95
|
# end
|
|
95
|
# end
|
|
96
|
#
|
|
96
|
#
|
|
97
|
# * <tt>if_changed</tt> - Simple way of specifying attributes that are required to be changed before saving a model. This takes
|
|
97
|
# * <tt>if_changed</tt> - Simple way of specifying attributes that are required to be changed before saving a model. This takes
|
|
98
|
# either a symbol or array of symbols. WARNING - This will attempt to overwrite any attribute setters you may have.
|
|
98
|
# either a symbol or array of symbols. WARNING - This will attempt to overwrite any attribute setters you may have.
|
|
99
|
# Use this instead if you want to write your own attribute setters (and ignore if_changed):
|
|
99
|
# Use this instead if you want to write your own attribute setters (and ignore if_changed):
|
|
100
|
#
|
|
100
|
#
|
|
101
|
# def name=(new_name)
|
|
101
|
# def name=(new_name)
|
|
102
|
# write_changed_attribute :name, new_name
|
|
102
|
# write_changed_attribute :name, new_name
|
|
103
|
# end
|
|
103
|
# end
|
|
104
|
#
|
|
104
|
#
|
|
105
|
# * <tt>extend</tt> - Lets you specify a module to be mixed in both the original and versioned models. You can also just pass a block
|
|
105
|
# * <tt>extend</tt> - Lets you specify a module to be mixed in both the original and versioned models. You can also just pass a block
|
|
106
|
# to create an anonymous mixin:
|
|
106
|
# to create an anonymous mixin:
|
|
107
|
#
|
|
107
|
#
|
|
108
|
# class Auction
|
|
108
|
# class Auction
|
|
109
|
# acts_as_versioned do
|
|
109
|
# acts_as_versioned do
|
|
110
|
# def started?
|
|
110
|
# def started?
|
|
111
|
# !started_at.nil?
|
|
111
|
# !started_at.nil?
|
|
112
|
# end
|
|
112
|
# end
|
|
113
|
# end
|
|
113
|
# end
|
|
114
|
# end
|
|
114
|
# end
|
|
115
|
#
|
|
115
|
#
|
|
116
|
# or...
|
|
116
|
# or...
|
|
117
|
#
|
|
117
|
#
|
|
118
|
# module AuctionExtension
|
|
118
|
# module AuctionExtension
|
|
119
|
# def started?
|
|
119
|
# def started?
|
|
120
|
# !started_at.nil?
|
|
120
|
# !started_at.nil?
|
|
121
|
# end
|
|
121
|
# end
|
|
122
|
# end
|
|
122
|
# end
|
|
123
|
# class Auction
|
|
123
|
# class Auction
|
|
124
|
# acts_as_versioned :extend => AuctionExtension
|
|
124
|
# acts_as_versioned :extend => AuctionExtension
|
|
125
|
# end
|
|
125
|
# end
|
|
126
|
#
|
|
126
|
#
|
|
127
|
# Example code:
|
|
127
|
# Example code:
|
|
128
|
#
|
|
128
|
#
|
|
129
|
# @auction = Auction.find(1)
|
|
129
|
# @auction = Auction.find(1)
|
|
130
|
# @auction.started?
|
|
130
|
# @auction.started?
|
|
131
|
# @auction.versions.first.started?
|
|
131
|
# @auction.versions.first.started?
|
|
132
|
#
|
|
132
|
#
|
|
133
|
# == Database Schema
|
|
133
|
# == Database Schema
|
|
134
|
#
|
|
134
|
#
|
|
135
|
# The model that you're versioning needs to have a 'version' attribute. The model is versioned
|
|
135
|
# The model that you're versioning needs to have a 'version' attribute. The model is versioned
|
|
136
|
# into a table called #{model}_versions where the model name is singlular. The _versions table should
|
|
136
|
# into a table called #{model}_versions where the model name is singlular. The _versions table should
|
|
137
|
# contain all the fields you want versioned, the same version column, and a #{model}_id foreign key field.
|
|
137
|
# contain all the fields you want versioned, the same version column, and a #{model}_id foreign key field.
|
|
138
|
#
|
|
138
|
#
|
|
139
|
# A lock_version field is also accepted if your model uses Optimistic Locking. If your table uses Single Table inheritance,
|
|
139
|
# A lock_version field is also accepted if your model uses Optimistic Locking. If your table uses Single Table inheritance,
|
|
140
|
# then that field is reflected in the versioned model as 'versioned_type' by default.
|
|
140
|
# then that field is reflected in the versioned model as 'versioned_type' by default.
|
|
141
|
#
|
|
141
|
#
|
|
142
|
# Acts_as_versioned comes prepared with the ActiveRecord::Acts::Versioned::ActMethods::ClassMethods#create_versioned_table
|
|
142
|
# Acts_as_versioned comes prepared with the ActiveRecord::Acts::Versioned::ActMethods::ClassMethods#create_versioned_table
|
|
143
|
# method, perfect for a migration. It will also create the version column if the main model does not already have it.
|
|
143
|
# method, perfect for a migration. It will also create the version column if the main model does not already have it.
|
|
144
|
#
|
|
144
|
#
|
|
145
|
# class AddVersions < ActiveRecord::Migration
|
|
145
|
# class AddVersions < ActiveRecord::Migration
|
|
146
|
# def self.up
|
|
146
|
# def self.up
|
|
147
|
# # create_versioned_table takes the same options hash
|
|
147
|
# # create_versioned_table takes the same options hash
|
|
148
|
# # that create_table does
|
|
148
|
# # that create_table does
|
|
149
|
# Post.create_versioned_table
|
|
149
|
# Post.create_versioned_table
|
|
150
|
# end
|
|
150
|
# end
|
|
151
|
#
|
|
151
|
#
|
|
152
|
# def self.down
|
|
152
|
# def self.down
|
|
153
|
# Post.drop_versioned_table
|
|
153
|
# Post.drop_versioned_table
|
|
154
|
# end
|
|
154
|
# end
|
|
155
|
# end
|
|
155
|
# end
|
|
156
|
#
|
|
156
|
#
|
|
157
|
# == Changing What Fields Are Versioned
|
|
157
|
# == Changing What Fields Are Versioned
|
|
158
|
#
|
|
158
|
#
|
|
159
|
# By default, acts_as_versioned will version all but these fields:
|
|
159
|
# By default, acts_as_versioned will version all but these fields:
|
|
160
|
#
|
|
160
|
#
|
|
161
|
# [self.primary_key, inheritance_column, 'version', 'lock_version', versioned_inheritance_column]
|
|
161
|
# [self.primary_key, inheritance_column, 'version', 'lock_version', versioned_inheritance_column]
|
|
162
|
#
|
|
162
|
#
|
|
163
|
# You can add or change those by modifying #non_versioned_columns. Note that this takes strings and not symbols.
|
|
163
|
# You can add or change those by modifying #non_versioned_columns. Note that this takes strings and not symbols.
|
|
164
|
#
|
|
164
|
#
|
|
165
|
# class Post < ActiveRecord::Base
|
|
165
|
# class Post < ActiveRecord::Base
|
|
166
|
# acts_as_versioned
|
|
166
|
# acts_as_versioned
|
|
167
|
# self.non_versioned_columns << 'comments_count'
|
|
167
|
# self.non_versioned_columns << 'comments_count'
|
|
168
|
# end
|
|
168
|
# end
|
|
169
|
#
|
|
169
|
#
|
|
170
|
def acts_as_versioned(options = {}, &extension)
|
|
170
|
def acts_as_versioned(options = {}, &extension)
|
|
171
|
# don't allow multiple calls
|
|
171
|
# don't allow multiple calls
|
|
172
|
return if self.included_modules.include?(ActiveRecord::Acts::Versioned::ActMethods)
|
|
172
|
return if self.included_modules.include?(ActiveRecord::Acts::Versioned::ActMethods)
|
|
173
|
|
|
173
|
|
|
174
|
send :include, ActiveRecord::Acts::Versioned::ActMethods
|
|
174
|
send :include, ActiveRecord::Acts::Versioned::ActMethods
|
|
175
|
|
|
175
|
|
|
176
|
cattr_accessor :versioned_class_name, :versioned_foreign_key, :versioned_table_name, :versioned_inheritance_column,
|
|
176
|
cattr_accessor :versioned_class_name, :versioned_foreign_key, :versioned_table_name, :versioned_inheritance_column,
|
|
177
|
:version_column, :max_version_limit, :track_altered_attributes, :version_condition, :version_sequence_name, :non_versioned_columns,
|
|
177
|
:version_column, :max_version_limit, :track_altered_attributes, :version_condition, :version_sequence_name, :non_versioned_columns,
|
|
178
|
:version_association_options
|
|
178
|
:version_association_options
|
|
179
|
|
|
179
|
|
|
180
|
# legacy
|
|
180
|
# legacy
|
|
181
|
alias_method :non_versioned_fields, :non_versioned_columns
|
|
181
|
alias_method :non_versioned_fields, :non_versioned_columns
|
|
182
|
alias_method :non_versioned_fields=, :non_versioned_columns=
|
|
182
|
alias_method :non_versioned_fields=, :non_versioned_columns=
|
|
183
|
|
|
183
|
|
|
184
|
class << self
|
|
184
|
class << self
|
|
185
|
alias_method :non_versioned_fields, :non_versioned_columns
|
|
185
|
alias_method :non_versioned_fields, :non_versioned_columns
|
|
186
|
alias_method :non_versioned_fields=, :non_versioned_columns=
|
|
186
|
alias_method :non_versioned_fields=, :non_versioned_columns=
|
|
187
|
end
|
|
187
|
end
|
|
188
|
|
|
188
|
|
|
189
|
send :attr_accessor, :altered_attributes
|
|
189
|
send :attr_accessor, :altered_attributes
|
|
190
|
|
|
190
|
|
|
191
|
self.versioned_class_name = options[:class_name] || "Version"
|
|
191
|
self.versioned_class_name = options[:class_name] || "Version"
|
|
192
|
self.versioned_foreign_key = options[:foreign_key] || self.to_s.foreign_key
|
|
192
|
self.versioned_foreign_key = options[:foreign_key] || self.to_s.foreign_key
|
|
193
|
self.versioned_table_name = options[:table_name] || "#{table_name_prefix}#{base_class.name.demodulize.underscore}_versions#{table_name_suffix}"
|
|
193
|
self.versioned_table_name = options[:table_name] || "#{table_name_prefix}#{base_class.name.demodulize.underscore}_versions#{table_name_suffix}"
|
|
194
|
self.versioned_inheritance_column = options[:inheritance_column] || "versioned_#{inheritance_column}"
|
|
194
|
self.versioned_inheritance_column = options[:inheritance_column] || "versioned_#{inheritance_column}"
|
|
195
|
self.version_column = options[:version_column] || 'version'
|
|
195
|
self.version_column = options[:version_column] || 'version'
|
|
196
|
self.version_sequence_name = options[:sequence_name]
|
|
196
|
self.version_sequence_name = options[:sequence_name]
|
|
197
|
self.max_version_limit = options[:limit].to_i
|
|
197
|
self.max_version_limit = options[:limit].to_i
|
|
198
|
self.version_condition = options[:if] || true
|
|
198
|
self.version_condition = options[:if] || true
|
|
199
|
self.non_versioned_columns = [self.primary_key, inheritance_column, 'version', 'lock_version', versioned_inheritance_column]
|
|
199
|
self.non_versioned_columns = [self.primary_key, inheritance_column, 'version', 'lock_version', versioned_inheritance_column]
|
|
200
|
self.version_association_options = {
|
|
200
|
self.version_association_options = {
|
|
201
|
:class_name => "#{self.to_s}::#{versioned_class_name}",
|
|
201
|
:class_name => "#{self.to_s}::#{versioned_class_name}",
|
|
202
|
:foreign_key => versioned_foreign_key,
|
|
202
|
:foreign_key => versioned_foreign_key,
|
|
203
|
:dependent => :delete_all
|
|
203
|
:dependent => :delete_all
|
|
204
|
}.merge(options[:association_options] || {})
|
|
204
|
}.merge(options[:association_options] || {})
|
|
205
|
|
|
205
|
|
|
206
|
if block_given?
|
|
206
|
if block_given?
|
|
207
|
extension_module_name = "#{versioned_class_name}Extension"
|
|
207
|
extension_module_name = "#{versioned_class_name}Extension"
|
|
208
|
silence_warnings do
|
|
208
|
silence_warnings do
|
|
209
|
self.const_set(extension_module_name, Module.new(&extension))
|
|
209
|
self.const_set(extension_module_name, Module.new(&extension))
|
|
210
|
end
|
|
210
|
end
|
|
211
|
|
|
211
|
|
|
212
|
options[:extend] = self.const_get(extension_module_name)
|
|
212
|
options[:extend] = self.const_get(extension_module_name)
|
|
213
|
end
|
|
213
|
end
|
|
214
|
|
|
214
|
|
|
215
|
class_eval do
|
|
215
|
class_eval do
|
|
216
|
has_many :versions, version_association_options do
|
|
216
|
has_many :versions, version_association_options do
|
|
217
|
# finds earliest version of this record
|
|
217
|
# finds earliest version of this record
|
|
218
|
def earliest
|
|
218
|
def earliest
|
|
219
|
@earliest ||= find(:first, :order => 'version')
|
|
219
|
@earliest ||= find(:first, :order => 'version')
|
|
220
|
end
|
|
220
|
end
|
|
221
|
|
|
221
|
|
|
222
|
# find latest version of this record
|
|
222
|
# find latest version of this record
|
|
223
|
def latest
|
|
223
|
def latest
|
|
224
|
@latest ||= find(:first, :order => 'version desc')
|
|
224
|
@latest ||= find(:first, :order => 'version desc')
|
|
225
|
end
|
|
225
|
end
|
|
226
|
end
|
|
226
|
end
|
|
227
|
before_save :set_new_version
|
|
227
|
before_save :set_new_version
|
|
228
|
after_create :save_version_on_create
|
|
228
|
after_create :save_version_on_create
|
|
229
|
after_update :save_version
|
|
229
|
after_update :save_version
|
|
230
|
after_save :clear_old_versions
|
|
230
|
after_save :clear_old_versions
|
|
231
|
after_save :clear_altered_attributes
|
|
231
|
after_save :clear_altered_attributes
|
|
232
|
|
|
232
|
|
|
233
|
unless options[:if_changed].nil?
|
|
233
|
unless options[:if_changed].nil?
|
|
234
|
self.track_altered_attributes = true
|
|
234
|
self.track_altered_attributes = true
|
|
235
|
options[:if_changed] = [options[:if_changed]] unless options[:if_changed].is_a?(Array)
|
|
235
|
options[:if_changed] = [options[:if_changed]] unless options[:if_changed].is_a?(Array)
|
|
236
|
options[:if_changed].each do |attr_name|
|
|
236
|
options[:if_changed].each do |attr_name|
|
|
237
|
define_method("#{attr_name}=") do |value|
|
|
237
|
define_method("#{attr_name}=") do |value|
|
|
238
|
write_changed_attribute attr_name, value
|
|
238
|
write_changed_attribute attr_name, value
|
|
239
|
end
|
|
239
|
end
|
|
240
|
end
|
|
240
|
end
|
|
241
|
end
|
|
241
|
end
|
|
242
|
|
|
242
|
|
|
243
|
include options[:extend] if options[:extend].is_a?(Module)
|
|
243
|
include options[:extend] if options[:extend].is_a?(Module)
|
|
244
|
end
|
|
244
|
end
|
|
245
|
|
|
245
|
|
|
246
|
# create the dynamic versioned model
|
|
246
|
# create the dynamic versioned model
|
|
247
|
const_set(versioned_class_name, Class.new(ActiveRecord::Base)).class_eval do
|
|
247
|
const_set(versioned_class_name, Class.new(ActiveRecord::Base)).class_eval do
|
|
248
|
def self.reloadable? ; false ; end
|
|
248
|
def self.reloadable? ; false ; end
|
|
249
|
# find first version before the given version
|
|
249
|
# find first version before the given version
|
|
250
|
def self.before(version)
|
|
250
|
def self.before(version)
|
|
251
|
find :first, :order => 'version desc',
|
|
251
|
find :first, :order => 'version desc',
|
|
252
|
:conditions => ["#{original_class.versioned_foreign_key} = ? and version < ?", version.send(original_class.versioned_foreign_key), version.version]
|
|
252
|
:conditions => ["#{original_class.versioned_foreign_key} = ? and version < ?", version.send(original_class.versioned_foreign_key), version.version]
|
|
253
|
end
|
|
253
|
end
|
|
254
|
|
|
254
|
|
|
255
|
# find first version after the given version.
|
|
255
|
# find first version after the given version.
|
|
256
|
def self.after(version)
|
|
256
|
def self.after(version)
|
|
257
|
find :first, :order => 'version',
|
|
257
|
find :first, :order => 'version',
|
|
258
|
:conditions => ["#{original_class.versioned_foreign_key} = ? and version > ?", version.send(original_class.versioned_foreign_key), version.version]
|
|
258
|
:conditions => ["#{original_class.versioned_foreign_key} = ? and version > ?", version.send(original_class.versioned_foreign_key), version.version]
|
|
259
|
end
|
|
259
|
end
|
|
260
|
|
|
260
|
|
|
261
|
def previous
|
|
261
|
def previous
|
|
262
|
self.class.before(self)
|
|
262
|
self.class.before(self)
|
|
263
|
end
|
|
263
|
end
|
|
264
|
|
|
264
|
|
|
265
|
def next
|
|
265
|
def next
|
|
266
|
self.class.after(self)
|
|
266
|
self.class.after(self)
|
|
267
|
end
|
|
267
|
end
|
|
268
|
|
|
268
|
|
|
269
|
def versions_count
|
|
269
|
def versions_count
|
|
270
|
page.version
|
|
270
|
page.version
|
|
271
|
end
|
|
271
|
end
|
|
272
|
end
|
|
272
|
end
|
|
273
|
|
|
273
|
|
|
274
|
versioned_class.cattr_accessor :original_class
|
|
274
|
versioned_class.cattr_accessor :original_class
|
|
275
|
versioned_class.original_class = self
|
|
275
|
versioned_class.original_class = self
|
|
276
|
versioned_class.set_table_name versioned_table_name
|
|
276
|
versioned_class.table_name = versioned_table_name
|
|
277
|
versioned_class.belongs_to self.to_s.demodulize.underscore.to_sym,
|
|
277
|
versioned_class.belongs_to self.to_s.demodulize.underscore.to_sym,
|
|
278
|
:class_name => "::#{self.to_s}",
|
|
278
|
:class_name => "::#{self.to_s}",
|
|
279
|
:foreign_key => versioned_foreign_key
|
|
279
|
:foreign_key => versioned_foreign_key
|
|
280
|
versioned_class.send :include, options[:extend] if options[:extend].is_a?(Module)
|
|
280
|
versioned_class.send :include, options[:extend] if options[:extend].is_a?(Module)
|
|
281
|
versioned_class.set_sequence_name version_sequence_name if version_sequence_name
|
|
281
|
versioned_class.set_sequence_name version_sequence_name if version_sequence_name
|
|
282
|
end
|
|
282
|
end
|
|
283
|
end
|
|
283
|
end
|
|
284
|
|
|
284
|
|
|
285
|
module ActMethods
|
|
285
|
module ActMethods
|
|
286
|
def self.included(base) # :nodoc:
|
|
286
|
def self.included(base) # :nodoc:
|
|
287
|
base.extend ClassMethods
|
|
287
|
base.extend ClassMethods
|
|
288
|
end
|
|
288
|
end
|
|
289
|
|
|
289
|
|
|
290
|
# Finds a specific version of this record
|
|
290
|
# Finds a specific version of this record
|
|
291
|
def find_version(version = nil)
|
|
291
|
def find_version(version = nil)
|
|
292
|
self.class.find_version(id, version)
|
|
292
|
self.class.find_version(id, version)
|
|
293
|
end
|
|
293
|
end
|
|
294
|
|
|
294
|
|
|
295
|
# Saves a version of the model if applicable
|
|
295
|
# Saves a version of the model if applicable
|
|
296
|
def save_version
|
|
296
|
def save_version
|
|
297
|
save_version_on_create if save_version?
|
|
297
|
save_version_on_create if save_version?
|
|
298
|
end
|
|
298
|
end
|
|
299
|
|
|
299
|
|
|
300
|
# Saves a version of the model in the versioned table. This is called in the after_save callback by default
|
|
300
|
# Saves a version of the model in the versioned table. This is called in the after_save callback by default
|
|
301
|
def save_version_on_create
|
|
301
|
def save_version_on_create
|
|
302
|
rev = self.class.versioned_class.new
|
|
302
|
rev = self.class.versioned_class.new
|
|
303
|
self.clone_versioned_model(self, rev)
|
|
303
|
self.clone_versioned_model(self, rev)
|
|
304
|
rev.version = send(self.class.version_column)
|
|
304
|
rev.version = send(self.class.version_column)
|
|
305
|
rev.send("#{self.class.versioned_foreign_key}=", self.id)
|
|
305
|
rev.send("#{self.class.versioned_foreign_key}=", self.id)
|
|
306
|
rev.save
|
|
306
|
rev.save
|
|
307
|
end
|
|
307
|
end
|
|
308
|
|
|
308
|
|
|
309
|
# Clears old revisions if a limit is set with the :limit option in <tt>acts_as_versioned</tt>.
|
|
309
|
# Clears old revisions if a limit is set with the :limit option in <tt>acts_as_versioned</tt>.
|
|
310
|
# Override this method to set your own criteria for clearing old versions.
|
|
310
|
# Override this method to set your own criteria for clearing old versions.
|
|
311
|
def clear_old_versions
|
|
311
|
def clear_old_versions
|
|
312
|
return if self.class.max_version_limit == 0
|
|
312
|
return if self.class.max_version_limit == 0
|
|
313
|
excess_baggage = send(self.class.version_column).to_i - self.class.max_version_limit
|
|
313
|
excess_baggage = send(self.class.version_column).to_i - self.class.max_version_limit
|
|
314
|
if excess_baggage > 0
|
|
314
|
if excess_baggage > 0
|
|
315
|
sql = "DELETE FROM #{self.class.versioned_table_name} WHERE version <= #{excess_baggage} AND #{self.class.versioned_foreign_key} = #{self.id}"
|
|
315
|
sql = "DELETE FROM #{self.class.versioned_table_name} WHERE version <= #{excess_baggage} AND #{self.class.versioned_foreign_key} = #{self.id}"
|
|
316
|
self.class.versioned_class.connection.execute sql
|
|
316
|
self.class.versioned_class.connection.execute sql
|
|
317
|
end
|
|
317
|
end
|
|
318
|
end
|
|
318
|
end
|
|
319
|
|
|
319
|
|
|
320
|
def versions_count
|
|
320
|
def versions_count
|
|
321
|
version
|
|
321
|
version
|
|
322
|
end
|
|
322
|
end
|
|
323
|
|
|
323
|
|
|
324
|
# Reverts a model to a given version. Takes either a version number or an instance of the versioned model
|
|
324
|
# Reverts a model to a given version. Takes either a version number or an instance of the versioned model
|
|
325
|
def revert_to(version)
|
|
325
|
def revert_to(version)
|
|
326
|
if version.is_a?(self.class.versioned_class)
|
|
326
|
if version.is_a?(self.class.versioned_class)
|
|
327
|
return false unless version.send(self.class.versioned_foreign_key) == self.id and !version.new_record?
|
|
327
|
return false unless version.send(self.class.versioned_foreign_key) == self.id and !version.new_record?
|
|
328
|
else
|
|
328
|
else
|
|
329
|
return false unless version = versions.find_by_version(version)
|
|
329
|
return false unless version = versions.find_by_version(version)
|
|
330
|
end
|
|
330
|
end
|
|
331
|
self.clone_versioned_model(version, self)
|
|
331
|
self.clone_versioned_model(version, self)
|
|
332
|
self.send("#{self.class.version_column}=", version.version)
|
|
332
|
self.send("#{self.class.version_column}=", version.version)
|
|
333
|
true
|
|
333
|
true
|
|
334
|
end
|
|
334
|
end
|
|
335
|
|
|
335
|
|
|
336
|
# Reverts a model to a given version and saves the model.
|
|
336
|
# Reverts a model to a given version and saves the model.
|
|
337
|
# Takes either a version number or an instance of the versioned model
|
|
337
|
# Takes either a version number or an instance of the versioned model
|
|
338
|
def revert_to!(version)
|
|
338
|
def revert_to!(version)
|
|
339
|
revert_to(version) ? save_without_revision : false
|
|
339
|
revert_to(version) ? save_without_revision : false
|
|
340
|
end
|
|
340
|
end
|
|
341
|
|
|
341
|
|
|
342
|
# Temporarily turns off Optimistic Locking while saving. Used when reverting so that a new version is not created.
|
|
342
|
# Temporarily turns off Optimistic Locking while saving. Used when reverting so that a new version is not created.
|
|
343
|
def save_without_revision
|
|
343
|
def save_without_revision
|
|
344
|
save_without_revision!
|
|
344
|
save_without_revision!
|
|
345
|
true
|
|
345
|
true
|
|
346
|
rescue
|
|
346
|
rescue
|
|
347
|
false
|
|
347
|
false
|
|
348
|
end
|
|
348
|
end
|
|
349
|
|
|
349
|
|
|
350
|
def save_without_revision!
|
|
350
|
def save_without_revision!
|
|
351
|
without_locking do
|
|
351
|
without_locking do
|
|
352
|
without_revision do
|
|
352
|
without_revision do
|
|
353
|
save!
|
|
353
|
save!
|
|
354
|
end
|
|
354
|
end
|
|
355
|
end
|
|
355
|
end
|
|
356
|
end
|
|
356
|
end
|
|
357
|
|
|
357
|
|
|
358
|
# Returns an array of attribute keys that are versioned. See non_versioned_columns
|
|
358
|
# Returns an array of attribute keys that are versioned. See non_versioned_columns
|
|
359
|
def versioned_attributes
|
|
359
|
def versioned_attributes
|
|
360
|
self.attributes.keys.select { |k| !self.class.non_versioned_columns.include?(k) }
|
|
360
|
self.attributes.keys.select { |k| !self.class.non_versioned_columns.include?(k) }
|
|
361
|
end
|
|
361
|
end
|
|
362
|
|
|
362
|
|
|
363
|
# If called with no parameters, gets whether the current model has changed and needs to be versioned.
|
|
363
|
# If called with no parameters, gets whether the current model has changed and needs to be versioned.
|
|
364
|
# If called with a single parameter, gets whether the parameter has changed.
|
|
364
|
# If called with a single parameter, gets whether the parameter has changed.
|
|
365
|
def changed?(attr_name = nil)
|
|
365
|
def changed?(attr_name = nil)
|
|
366
|
attr_name.nil? ?
|
|
366
|
attr_name.nil? ?
|
|
367
|
(!self.class.track_altered_attributes || (altered_attributes && altered_attributes.length > 0)) :
|
|
367
|
(!self.class.track_altered_attributes || (altered_attributes && altered_attributes.length > 0)) :
|
|
368
|
(altered_attributes && altered_attributes.include?(attr_name.to_s))
|
|
368
|
(altered_attributes && altered_attributes.include?(attr_name.to_s))
|
|
369
|
end
|
|
369
|
end
|
|
370
|
|
|
370
|
|
|
371
|
# keep old dirty? method
|
|
371
|
# keep old dirty? method
|
|
372
|
alias_method :dirty?, :changed?
|
|
372
|
alias_method :dirty?, :changed?
|
|
373
|
|
|
373
|
|
|
374
|
# Clones a model. Used when saving a new version or reverting a model's version.
|
|
374
|
# Clones a model. Used when saving a new version or reverting a model's version.
|
|
375
|
def clone_versioned_model(orig_model, new_model)
|
|
375
|
def clone_versioned_model(orig_model, new_model)
|
|
376
|
self.versioned_attributes.each do |key|
|
|
376
|
self.versioned_attributes.each do |key|
|
|
377
|
new_model.send("#{key}=", orig_model.send(key)) if orig_model.has_attribute?(key)
|
|
377
|
new_model.send("#{key}=", orig_model.send(key)) if orig_model.has_attribute?(key)
|
|
378
|
end
|
|
378
|
end
|
|
379
|
|
|
379
|
|
|
380
|
if self.class.columns_hash.include?(self.class.inheritance_column)
|
|
380
|
if self.class.columns_hash.include?(self.class.inheritance_column)
|
|
381
|
if orig_model.is_a?(self.class.versioned_class)
|
|
381
|
if orig_model.is_a?(self.class.versioned_class)
|
|
382
|
new_model[new_model.class.inheritance_column] = orig_model[self.class.versioned_inheritance_column]
|
|
382
|
new_model[new_model.class.inheritance_column] = orig_model[self.class.versioned_inheritance_column]
|
|
383
|
elsif new_model.is_a?(self.class.versioned_class)
|
|
383
|
elsif new_model.is_a?(self.class.versioned_class)
|
|
384
|
new_model[self.class.versioned_inheritance_column] = orig_model[orig_model.class.inheritance_column]
|
|
384
|
new_model[self.class.versioned_inheritance_column] = orig_model[orig_model.class.inheritance_column]
|
|
385
|
end
|
|
385
|
end
|
|
386
|
end
|
|
386
|
end
|
|
387
|
end
|
|
387
|
end
|
|
388
|
|
|
388
|
|
|
389
|
# Checks whether a new version shall be saved or not. Calls <tt>version_condition_met?</tt> and <tt>changed?</tt>.
|
|
389
|
# Checks whether a new version shall be saved or not. Calls <tt>version_condition_met?</tt> and <tt>changed?</tt>.
|
|
390
|
def save_version?
|
|
390
|
def save_version?
|
|
391
|
version_condition_met? && changed?
|
|
391
|
version_condition_met? && changed?
|
|
392
|
end
|
|
392
|
end
|
|
393
|
|
|
393
|
|
|
394
|
# Checks condition set in the :if option to check whether a revision should be created or not. Override this for
|
|
394
|
# Checks condition set in the :if option to check whether a revision should be created or not. Override this for
|
|
395
|
# custom version condition checking.
|
|
395
|
# custom version condition checking.
|
|
396
|
def version_condition_met?
|
|
396
|
def version_condition_met?
|
|
397
|
case
|
|
397
|
case
|
|
398
|
when version_condition.is_a?(Symbol)
|
|
398
|
when version_condition.is_a?(Symbol)
|
|
399
|
send(version_condition)
|
|
399
|
send(version_condition)
|
|
400
|
when version_condition.respond_to?(:call) && (version_condition.arity == 1 || version_condition.arity == -1)
|
|
400
|
when version_condition.respond_to?(:call) && (version_condition.arity == 1 || version_condition.arity == -1)
|
|
401
|
version_condition.call(self)
|
|
401
|
version_condition.call(self)
|
|
402
|
else
|
|
402
|
else
|
|
403
|
version_condition
|
|
403
|
version_condition
|
|
404
|
end
|
|
404
|
end
|
|
405
|
end
|
|
405
|
end
|
|
406
|
|
|
406
|
|
|
407
|
# Executes the block with the versioning callbacks disabled.
|
|
407
|
# Executes the block with the versioning callbacks disabled.
|
|
408
|
#
|
|
408
|
#
|
|
409
|
# @foo.without_revision do
|
|
409
|
# @foo.without_revision do
|
|
410
|
# @foo.save
|
|
410
|
# @foo.save
|
|
411
|
# end
|
|
411
|
# end
|
|
412
|
#
|
|
412
|
#
|
|
413
|
def without_revision(&block)
|
|
413
|
def without_revision(&block)
|
|
414
|
self.class.without_revision(&block)
|
|
414
|
self.class.without_revision(&block)
|
|
415
|
end
|
|
415
|
end
|
|
416
|
|
|
416
|
|
|
417
|
# Turns off optimistic locking for the duration of the block
|
|
417
|
# Turns off optimistic locking for the duration of the block
|
|
418
|
#
|
|
418
|
#
|
|
419
|
# @foo.without_locking do
|
|
419
|
# @foo.without_locking do
|
|
420
|
# @foo.save
|
|
420
|
# @foo.save
|
|
421
|
# end
|
|
421
|
# end
|
|
422
|
#
|
|
422
|
#
|
|
423
|
def without_locking(&block)
|
|
423
|
def without_locking(&block)
|
|
424
|
self.class.without_locking(&block)
|
|
424
|
self.class.without_locking(&block)
|
|
425
|
end
|
|
425
|
end
|
|
426
|
|
|
426
|
|
|
427
|
def empty_callback() end #:nodoc:
|
|
427
|
def empty_callback() end #:nodoc:
|
|
428
|
|
|
428
|
|
|
429
|
protected
|
|
429
|
protected
|
|
430
|
# sets the new version before saving, unless you're using optimistic locking. In that case, let it take care of the version.
|
|
430
|
# sets the new version before saving, unless you're using optimistic locking. In that case, let it take care of the version.
|
|
431
|
def set_new_version
|
|
431
|
def set_new_version
|
|
432
|
self.send("#{self.class.version_column}=", self.next_version) if new_record? || (!locking_enabled? && save_version?)
|
|
432
|
self.send("#{self.class.version_column}=", self.next_version) if new_record? || (!locking_enabled? && save_version?)
|
|
433
|
end
|
|
433
|
end
|
|
434
|
|
|
434
|
|
|
435
|
# Gets the next available version for the current record, or 1 for a new record
|
|
435
|
# Gets the next available version for the current record, or 1 for a new record
|
|
436
|
def next_version
|
|
436
|
def next_version
|
|
437
|
return 1 if new_record?
|
|
437
|
return 1 if new_record?
|
|
438
|
(versions.calculate(:max, :version) || 0) + 1
|
|
438
|
(versions.calculate(:max, :version) || 0) + 1
|
|
439
|
end
|
|
439
|
end
|
|
440
|
|
|
440
|
|
|
441
|
# clears current changed attributes. Called after save.
|
|
441
|
# clears current changed attributes. Called after save.
|
|
442
|
def clear_altered_attributes
|
|
442
|
def clear_altered_attributes
|
|
443
|
self.altered_attributes = []
|
|
443
|
self.altered_attributes = []
|
|
444
|
end
|
|
444
|
end
|
|
445
|
|
|
445
|
|
|
446
|
def write_changed_attribute(attr_name, attr_value)
|
|
446
|
def write_changed_attribute(attr_name, attr_value)
|
|
447
|
# Convert to db type for comparison. Avoids failing Float<=>String comparisons.
|
|
447
|
# Convert to db type for comparison. Avoids failing Float<=>String comparisons.
|
|
448
|
attr_value_for_db = self.class.columns_hash[attr_name.to_s].type_cast(attr_value)
|
|
448
|
attr_value_for_db = self.class.columns_hash[attr_name.to_s].type_cast(attr_value)
|
|
449
|
(self.altered_attributes ||= []) << attr_name.to_s unless self.changed?(attr_name) || self.send(attr_name) == attr_value_for_db
|
|
449
|
(self.altered_attributes ||= []) << attr_name.to_s unless self.changed?(attr_name) || self.send(attr_name) == attr_value_for_db
|
|
450
|
write_attribute(attr_name, attr_value_for_db)
|
|
450
|
write_attribute(attr_name, attr_value_for_db)
|
|
451
|
end
|
|
451
|
end
|
|
452
|
|
|
452
|
|
|
453
|
module ClassMethods
|
|
453
|
module ClassMethods
|
|
454
|
# Finds a specific version of a specific row of this model
|
|
454
|
# Finds a specific version of a specific row of this model
|
|
455
|
def find_version(id, version = nil)
|
|
455
|
def find_version(id, version = nil)
|
|
456
|
return find(id) unless version
|
|
456
|
return find(id) unless version
|
|
457
|
|
|
457
|
|
|
458
|
conditions = ["#{versioned_foreign_key} = ? AND version = ?", id, version]
|
|
458
|
conditions = ["#{versioned_foreign_key} = ? AND version = ?", id, version]
|
|
459
|
options = { :conditions => conditions, :limit => 1 }
|
|
459
|
options = { :conditions => conditions, :limit => 1 }
|
|
460
|
|
|
460
|
|
|
461
|
if result = find_versions(id, options).first
|
|
461
|
if result = find_versions(id, options).first
|
|
462
|
result
|
|
462
|
result
|
|
463
|
else
|
|
463
|
else
|
|
464
|
raise RecordNotFound, "Couldn't find #{name} with ID=#{id} and VERSION=#{version}"
|
|
464
|
raise RecordNotFound, "Couldn't find #{name} with ID=#{id} and VERSION=#{version}"
|
|
465
|
end
|
|
465
|
end
|
|
466
|
end
|
|
466
|
end
|
|
467
|
|
|
467
|
|
|
468
|
# Finds versions of a specific model. Takes an options hash like <tt>find</tt>
|
|
468
|
# Finds versions of a specific model. Takes an options hash like <tt>find</tt>
|
|
469
|
def find_versions(id, options = {})
|
|
469
|
def find_versions(id, options = {})
|
|
470
|
versioned_class.find :all, {
|
|
470
|
versioned_class.find :all, {
|
|
471
|
:conditions => ["#{versioned_foreign_key} = ?", id],
|
|
471
|
:conditions => ["#{versioned_foreign_key} = ?", id],
|
|
472
|
:order => 'version' }.merge(options)
|
|
472
|
:order => 'version' }.merge(options)
|
|
473
|
end
|
|
473
|
end
|
|
474
|
|
|
474
|
|
|
475
|
# Returns an array of columns that are versioned. See non_versioned_columns
|
|
475
|
# Returns an array of columns that are versioned. See non_versioned_columns
|
|
476
|
def versioned_columns
|
|
476
|
def versioned_columns
|
|
477
|
self.columns.select { |c| !non_versioned_columns.include?(c.name) }
|
|
477
|
self.columns.select { |c| !non_versioned_columns.include?(c.name) }
|
|
478
|
end
|
|
478
|
end
|
|
479
|
|
|
479
|
|
|
480
|
# Returns an instance of the dynamic versioned model
|
|
480
|
# Returns an instance of the dynamic versioned model
|
|
481
|
def versioned_class
|
|
481
|
def versioned_class
|
|
482
|
const_get versioned_class_name
|
|
482
|
const_get versioned_class_name
|
|
483
|
end
|
|
483
|
end
|
|
484
|
|
|
484
|
|
|
485
|
# Rake migration task to create the versioned table using options passed to acts_as_versioned
|
|
485
|
# Rake migration task to create the versioned table using options passed to acts_as_versioned
|
|
486
|
def create_versioned_table(create_table_options = {})
|
|
486
|
def create_versioned_table(create_table_options = {})
|
|
487
|
# create version column in main table if it does not exist
|
|
487
|
# create version column in main table if it does not exist
|
|
488
|
if !self.content_columns.find { |c| %w(version lock_version).include? c.name }
|
|
488
|
if !self.content_columns.find { |c| %w(version lock_version).include? c.name }
|
|
489
|
self.connection.add_column table_name, :version, :integer
|
|
489
|
self.connection.add_column table_name, :version, :integer
|
|
490
|
end
|
|
490
|
end
|
|
491
|
|
|
491
|
|
|
492
|
self.connection.create_table(versioned_table_name, create_table_options) do |t|
|
|
492
|
self.connection.create_table(versioned_table_name, create_table_options) do |t|
|
|
493
|
t.column versioned_foreign_key, :integer
|
|
493
|
t.column versioned_foreign_key, :integer
|
|
494
|
t.column :version, :integer
|
|
494
|
t.column :version, :integer
|
|
495
|
end
|
|
495
|
end
|
|
496
|
|
|
496
|
|
|
497
|
updated_col = nil
|
|
497
|
updated_col = nil
|
|
498
|
self.versioned_columns.each do |col|
|
|
498
|
self.versioned_columns.each do |col|
|
|
499
|
updated_col = col if !updated_col && %(updated_at updated_on).include?(col.name)
|
|
499
|
updated_col = col if !updated_col && %(updated_at updated_on).include?(col.name)
|
|
500
|
self.connection.add_column versioned_table_name, col.name, col.type,
|
|
500
|
self.connection.add_column versioned_table_name, col.name, col.type,
|
|
501
|
:limit => col.limit,
|
|
501
|
:limit => col.limit,
|
|
502
|
:default => col.default,
|
|
502
|
:default => col.default,
|
|
503
|
:scale => col.scale,
|
|
503
|
:scale => col.scale,
|
|
504
|
:precision => col.precision
|
|
504
|
:precision => col.precision
|
|
505
|
end
|
|
505
|
end
|
|
506
|
|
|
506
|
|
|
507
|
if type_col = self.columns_hash[inheritance_column]
|
|
507
|
if type_col = self.columns_hash[inheritance_column]
|
|
508
|
self.connection.add_column versioned_table_name, versioned_inheritance_column, type_col.type,
|
|
508
|
self.connection.add_column versioned_table_name, versioned_inheritance_column, type_col.type,
|
|
509
|
:limit => type_col.limit,
|
|
509
|
:limit => type_col.limit,
|
|
510
|
:default => type_col.default,
|
|
510
|
:default => type_col.default,
|
|
511
|
:scale => type_col.scale,
|
|
511
|
:scale => type_col.scale,
|
|
512
|
:precision => type_col.precision
|
|
512
|
:precision => type_col.precision
|
|
513
|
end
|
|
513
|
end
|
|
514
|
|
|
514
|
|
|
515
|
if updated_col.nil?
|
|
515
|
if updated_col.nil?
|
|
516
|
self.connection.add_column versioned_table_name, :updated_at, :timestamp
|
|
516
|
self.connection.add_column versioned_table_name, :updated_at, :timestamp
|
|
517
|
end
|
|
517
|
end
|
|
518
|
end
|
|
518
|
end
|
|
519
|
|
|
519
|
|
|
520
|
# Rake migration task to drop the versioned table
|
|
520
|
# Rake migration task to drop the versioned table
|
|
521
|
def drop_versioned_table
|
|
521
|
def drop_versioned_table
|
|
522
|
self.connection.drop_table versioned_table_name
|
|
522
|
self.connection.drop_table versioned_table_name
|
|
523
|
end
|
|
523
|
end
|
|
524
|
|
|
524
|
|
|
525
|
# Executes the block with the versioning callbacks disabled.
|
|
525
|
# Executes the block with the versioning callbacks disabled.
|
|
526
|
#
|
|
526
|
#
|
|
527
|
# Foo.without_revision do
|
|
527
|
# Foo.without_revision do
|
|
528
|
# @foo.save
|
|
528
|
# @foo.save
|
|
529
|
# end
|
|
529
|
# end
|
|
530
|
#
|
|
530
|
#
|
|
531
|
def without_revision(&block)
|
|
531
|
def without_revision(&block)
|
|
532
|
class_eval do
|
|
532
|
class_eval do
|
|
533
|
CALLBACKS.each do |attr_name|
|
|
533
|
CALLBACKS.each do |attr_name|
|
|
534
|
alias_method "orig_#{attr_name}".to_sym, attr_name
|
|
534
|
alias_method "orig_#{attr_name}".to_sym, attr_name
|
|
535
|
alias_method attr_name, :empty_callback
|
|
535
|
alias_method attr_name, :empty_callback
|
|
536
|
end
|
|
536
|
end
|
|
537
|
end
|
|
537
|
end
|
|
538
|
block.call
|
|
538
|
block.call
|
|
539
|
ensure
|
|
539
|
ensure
|
|
540
|
class_eval do
|
|
540
|
class_eval do
|
|
541
|
CALLBACKS.each do |attr_name|
|
|
541
|
CALLBACKS.each do |attr_name|
|
|
542
|
alias_method attr_name, "orig_#{attr_name}".to_sym
|
|
542
|
alias_method attr_name, "orig_#{attr_name}".to_sym
|
|
543
|
end
|
|
543
|
end
|
|
544
|
end
|
|
544
|
end
|
|
545
|
end
|
|
545
|
end
|
|
546
|
|
|
546
|
|
|
547
|
# Turns off optimistic locking for the duration of the block
|
|
547
|
# Turns off optimistic locking for the duration of the block
|
|
548
|
#
|
|
548
|
#
|
|
549
|
# Foo.without_locking do
|
|
549
|
# Foo.without_locking do
|
|
550
|
# @foo.save
|
|
550
|
# @foo.save
|
|
551
|
# end
|
|
551
|
# end
|
|
552
|
#
|
|
552
|
#
|
|
553
|
def without_locking(&block)
|
|
553
|
def without_locking(&block)
|
|
554
|
current = ActiveRecord::Base.lock_optimistically
|
|
554
|
current = ActiveRecord::Base.lock_optimistically
|
|
555
|
ActiveRecord::Base.lock_optimistically = false if current
|
|
555
|
ActiveRecord::Base.lock_optimistically = false if current
|
|
556
|
result = block.call
|
|
556
|
result = block.call
|
|
557
|
ActiveRecord::Base.lock_optimistically = true if current
|
|
557
|
ActiveRecord::Base.lock_optimistically = true if current
|
|
558
|
result
|
|
558
|
result
|
|
559
|
end
|
|
559
|
end
|
|
560
|
end
|
|
560
|
end
|
|
561
|
end
|
|
561
|
end
|
|
562
|
end
|
|
562
|
end
|
|
563
|
end
|
|
563
|
end
|
|
564
|
end
|
|
564
|
end
|
|
565
|
|
|
565
|
|
|
566
|
ActiveRecord::Base.send :include, ActiveRecord::Acts::Versioned
No newline at end of file
|
|
566
|
ActiveRecord::Base.send :include, ActiveRecord::Acts::Versioned
|